Question

off the particle is moving along a straight line
given by the relation x = 2 - 3t +4t? where s is
in cms., and t in sec. Its average velocity
during the third sec is
his​

Answer 1

Bonjour!

According to the question

A particle is moving along a straight line given by the relation;

s = 2 - 3t + 4t³

Now, we have to find the average velocity, for this we will differentiate s with respect to t;

After differentiating ds/dt we get 6t² - 3

Now, we have to find average speed at t = 3 sec

So, we will put the value in ds/dt;

=> 6t² - 3 = 6(3)² - 3

=> 6 × 9 - 3

=> 54 - 3

=> 51

So, average speed at t = 3 is 51 m/s

Hope this helps...:)

Answer 2

Answer:

hello

According to the question

A particle is moving along a straight line given by the relation;

s = 2 - 3t + 4t³

Now, we have to find the average velocity, for this we will differentiate s with respect to t;

After differentiating ds/dt we get 6t² - 3

Now, we have to find average speed at t = 3 sec

So, we will put the value in ds/dt;

=> 6t² - 3 = 6(3)² - 3

=> 6 × 9 - 3

=> 54 - 3

=> 51

So, average speed at t = 3 is 51 m/s

Hope this helps...:)

if it helps mark brainlest